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license: apache-2.0
pretty_name: SciExp Fixtures
tags:
- test-fixtures
- duckdb
- ducklake
size_categories:
- n<1K
---
# sciexp/fixtures
Test fixtures and example datasets for [sciexp](https://github.com/sciexp).
## Quick start
```sh
git clone https://huggingface.co/datasets/sciexp/fixtures
cd fixtures
git lfs pull
```
## Datasets
### Space dataset
A relational dataset about space exploration demonstrating DuckLake workflows.
Contains tables for astronauts, missions, spacecraft, and mission crew assignments.
```sh
duckdb -box < queries/space.sql
```
<details>
<summary>Manual DuckDB session</summary>
DuckDB can access Hugging Face datasets directly via the [hf:// protocol](https://huggingface.co/docs/hub/datasets-duckdb).
See also [Access 150k+ datasets from Hugging Face with DuckDB](https://duckdb.org/2024/05/29/access-150k-plus-datasets-from-hugging-face-with-duckdb).
Attach directly from Hugging Face:
```sql
INSTALL ducklake;
LOAD ducklake;
ATTACH 'ducklake:hf://datasets/sciexp/fixtures/lakes/frozen/space.db' AS space;
SHOW TABLES FROM space.main;
```
Or from a local clone:
```sql
ATTACH 'ducklake:lakes/frozen/space.db' AS space;
```
</details>
## Attribution
The space missions dataset originates from:
- [marhar/frozen](https://github.com/marhar/frozen) - Frozen DuckLake Demo
- [marhar/duckdb_tools](https://github.com/marhar/duckdb_tools) - DuckDB tools including frozen-ducklake workflow scripts
## Repository layout
<details>
<summary>Directory structure</summary>
```
lakes/frozen/ DuckLake databases
space.db Metadata database
space/ Parquet data files
queries/ SQL scripts
```
</details>
## Contributing
<details>
<summary>Authentication and push workflow</summary>
Push access requires Hugging Face authentication:
```sh
hf auth login --token "${HF_TOKEN}" --add-to-git-credential
```
Push changes:
```sh
git lfs push --all origin
git push
```
</details>
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